Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o ano de 2004/05 quando o ano de 2011/12 não está classificado?
 ###Tabelas: CREATE TABLE most_tries_in_a_match (most_tries_in_a_match_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Tries VARCHAR, Conv VARCHAR, Venue VARCHAR, Date VARCHAR) CREATE TABLE racelines (racelines_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Track VARCHAR, Race VARCHAR, Purse VARCHAR, Finish VARCHAR, Time VARCHAR, Last 1/4 INT, Odds VARCHAR, Driver VARCHAR, Trainer VARCHAR) CREATE TABLE first_world_war (first_world_war_id AUTO_INCREMENT PRIMARY KEY, Rank in Military VARCHAR, Name VARCHAR, Born INT, Killed INT, Political Party VARCHAR, MP's Seat VARCHAR) CREATE TABLE performance_and_rankings_timeline (performance_and_rankings_timeline_id AUTO_INCREMENT PRIMARY KEY, 2004/ 05 VARCHAR, 2007/ 08 VARCHAR, 2010/ 11 VARCHAR, 2011/ 12 VARCHAR, 2012/ 13 VARCHAR) CREATE TABLE siena_college_research_institute_survey (siena_college_research_institute_survey_id AUTO_INCREMENT PRIMARY KEY, Seq. VARCHAR, Name VARCHAR, Background INT, Party Leadership INT, Communication Ability INT, Relations with Congress INT, Court Appointments INT, Handling of Economy INT, Luck INT, Ability to Compromise INT, Willing to take Risks INT, Executive Appointments INT, Overall Ability INT, Imagination INT, Domestic Accomplishments INT, Integrity INT, Executive Ability INT, Foreign Policy Accomplishments INT, Leadership Ability INT, Intelligence INT, Avoid Crucial Mistakes INT, Expert's View INT, Overall INT)  
SELECT 2004/ 05 FROM performance_and_rankings_timeline WHERE 2011/ 12 = non-ranking